LB1943N

Ordering number : EN7101 Monolithic Digital IC LB1943N Overview VCR Loading Motor Variable Output Forward/Reverse Motor Driver The LB1943N is a variable output forward/reverse motor driver that is optimal for driving motors such as the loading motor in VCR decks. Functions • Variable output forward/reverse motor driver • Built-in thermal protection circuit • Built-in reference voltage circuit (6.35V, typical) Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Maximum input voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VIN max IOUT max Pd max Topr Tstg VCC >VIN Conditions Ratings 18 -0.3 to +6 ±1.6 1.2 -25 to +75 -55 to +125 Unit V V A W °C °C Allowable Operating Range at Ta = 25°C Parameter Supply voltage range Symbol VCC1 VCC2 Forward to reverse operation disallowed period Toff VCC1 ≥ VCC2 Conditions Ratings 8.0 to 18 5 to 18 20 or more Unit V V μs Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 40407 TI PC B8-4954 No.7101-1/6 LB1945D Electrical Characteristics at Ta = 25°C, VCC = 12V Parameter Low-level input voltage High-level input voltage Mid-level input voltage Intput impedance Current consumption Output voltage 1 Output voltage 2 Output leakage current Saturation voltage (high side) Symbol VIN L VIN H VIN M ZIN ICC VOUT1 VOUT2 IO L V sat11 V sat12 Saturation voltage (low side) V sat21 V sat22 Reference supply voltage Reference voltage load characteristics Control to output gain Thermal shutdown temperature TTSD VOUT/VC, VC = 2.5V RL = 60Ω Design target* 1.5 150 1.9 180 2.4 Time °C Vref ΔVref/ΔIref Iref = 0mA to -2.0mA RL = 60Ω, VC = 2.5V, VIN1 = 2.5V, VIN2 = 0V RL = 60Ω, VC = 2.5V, VIN1 = 2.5V, VIN2 = 5.0V RL = ∞ VCC = 12V, IOUT = 300mA VCC = 12V, IOUT = 500mA VCC = 12V, IOUT = 300mA VCC = 12V, IOUT = 500mA 6.0 4.4 4.4 Conditions min 0 4.2 2.0 75 5.5 4.95 4.95 0.01 1.9 1.9 0.25 0.4 6.35 0.05 10 5.4 5.4 1.0 2.2 2.3 0.5 0.65 6.8 0.1 Ratings typ max 1.0 6.0 3.0 V V V kΩ mA V V mA mV V V V V V/mA Unit *: The design specification items are design guarantees and are not measured. Package Dimensions unit:mm (typ) 3043C 1.4 Pd max – Ta Tj = 125°C 24.0 3.25 Allowable power dissipation, Pd max – W 1.2 1.0 7.7MAX (6.5) 0.8 1.1 1 (0.62) 2.54 1.2 0.5 10 0.25 1.5 4.9 0.6 0.4 0.2 0 -40 SANYO : SIP10 -20 0 20 40 60 80 100 Ambient temperature, Ta – °C Pin Assignment LB1943N OUT1 VCC1 OUT2 VCC2 GND Vref IN1 IN2 NC VC Top view 1 2 3 4 5 6 7 8 9 10 No.7101-2/6 LB1945D Block Diagram 10 9 OUT2 VCC2 2 OUT1 8 VCC1 Thermal shutdown circuit Predriver Reference voltage circuit Vref 7 VC 6 Logic circuit NC 5 GND 1 IN1 3 4 IN2 Application Circuit Example VCC = 12V No.7101-3/6 LB1945D Truth Table Input IN1 H M L H M L H M L IN2 H H H M M M L L L OUT1 L L L off off off Full VC × 2 VC × 2 Output voltage OUT2 Full VC × 2 VC × 2 off off off L L L Operation Forward (reverse) mode Forward (reverse) mode Forward (reverse) mode Break Break Break Reverse (forward) mode Reverse (forward) mode Reverse (forward) mode H: high level, M: mid level, L: low level Input levels VH: 4.2V or higher VM: 2.0V to 3.0V VL: Under 1.0V When IN1 or IN2 is open, that input will go to the 2.5V level. Operation is equivalent to that of the LB1641. Pin Functions Pin No. 1 3 Pin GND IN1 Description • Common ground for the power signal systems • Output voltage switching input • When the input is open, VM will become about 2.5V. Equivalent Circuit VCC1 25μA 75kΩ 6.4V 19kΩ 3 13kΩ GND 4 IN2 • Forward/reverse/brake switching input • When the input is open, VM will become about 2.5V. VCC1 25μA 75kΩ 6.4V 19kΩ 4 13kΩ GND Continued on next page. No.7101-4/6 LB1945D Continued from preceding page. Pin No. 6 Pin VC Description • Output voltage setting Equivalent Circuit VCC1 6 GND 7 Vref • Reference voltage output Vref = 6.4V VCC1 7 GND 8 9 2 10 VCC1 VCC2 OUT1 OUT2 • Signal system power supply • Power system power supply • Motor coil connection VCC2 10 OUT2 260Ω 260Ω 2 OUT1 GND No.7101-5/6 LB1945D SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of April, 2007. Specifications and information herein are subject to change without notice. PS No.7101-6/6